Impact of Iran's Strait of Hormuz Blockade on US Market Predictions

By Patricia Miller

Apr 19, 2026

2 min read

Iran has blocked the Strait of Hormuz in retaliation against the US, raising tensions and impacting market predictions for conflict resolution.

Iran has recently obstructed the Strait of Hormuz, marking a significant escalation in its ongoing conflict with the United States. As tensions rise, the market predicts a 78% probability that President Trump will lift the US blockade by May 31. However, this figure has dropped from 90% just a day ago, reflecting growing skepticism among traders regarding a quick diplomatic resolution.

With a marked decrease in the likelihood of a lift before May 31, the chance of an earlier blockade lift by April 19 has plummeted to just 8%, down from 28% the previous day. This steep decline suggests that traders anticipate a prolonged period of conflict rather than an immediate resolution. The current structure of the market indicates a notable 70-point discrepancy between the April 19 prediction and the May 31 expectations, implying that any resolution could extend for weeks, not days.

On another note, the market for a potential US-Iran ceasefire has seen an increase, currently standing at 17.5% as opposed to just 8% yesterday. Nonetheless, Iran's blockade action may be considered a violation of any existing truce, increasing the probability that Trump could announce the ceasefire as broken by April 21.

Recent trading activity highlights an impressive total USDC volume of $29,602 across these markets. A notable point in trading occurred at 12:19 PM, where a single large move resulted in a 5-point drop. Current order book depth appears frail, as a mere $1,419 is sufficient to shift the odds by 5 points concerning the May 31 market. This fragility indicates that even minor trading actions can lead to significant market fluctuations.

The blockade from Iran stands as a critical escalation that effectively constrains pathways to diplomacy. This back-and-forth dynamic not only heightens risks but also diminishes the likelihood of an immediate blockade lift, despite earlier signs suggesting possible diplomatic advancements. At the current market price of 78 cents, a YES share indicates a payout of $1 should Trump announce the blockade lift by the specified date, representing a decent return of 1.28 times the investment. However, achieving this return assumes either a swift de-escalation of tensions or an unforeseen diplomatic breakthrough.

Investors should closely monitor President Trump’s statements, particularly any new sanctions or military movements that might arise. Additionally, the Pentagon's updates regarding operational readiness in the Strait of Hormuz will be significant; changes in naval activities could serve as essential indicators that influence market directions.

Important Notice And Disclaimer

This article does not provide any financial advice and is not a recommendation to deal in any securities or product. Investments may fall in value and an investor may lose some or all of their investment. Past performance is not an indicator of future performance.